Route 120 is another long route. This route often features some poor weather to the south and has a myriad of Pokémon and trainers. In the north of the route, there is a cave, the Scorched Slab, sitting in the middle of a lake while the south contains various ponds and access to the Ancient Tomb which is unlocked after visiting the Sealed Chamber. The Ancient Tomb contains the Pokémon Registeel which is obtained by doing the following puzzle. In OmegaRuby/AlphaSapphire, you need to go to the middle of the room and use Fly.